Working on the Machenike B500-K61

[fucksophie]

Support for this is already in sinowealth-kb-tool, and Rangoli. And so writing a layout shouldn't be hard at all, I just don't own a arduino at the moment to reflash the keyboard (I own several esp32's and rp2040s, but no arduinos) and I'm scared of bricking it at the moment. This will be a placeholder issue untill I either piece together the information from the Royal Kludge software (because, i guess they all use the same software), or I trace all of the traces on the board & buy a Arduino (which I don't wanna do).

Cfg.ini from K500 software (probably very useful): https://pastebin.com/tAKybZS0